JPS61189959A - Thick film thermal recording head - Google Patents
Thick film thermal recording headInfo
- Publication number
- JPS61189959A JPS61189959A JP60030318A JP3031885A JPS61189959A JP S61189959 A JPS61189959 A JP S61189959A JP 60030318 A JP60030318 A JP 60030318A JP 3031885 A JP3031885 A JP 3031885A JP S61189959 A JPS61189959 A JP S61189959A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- resistance value
- recording head
- thick film
- laser cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/345—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads characterised by the arrangement of resistors or conductors
Landscapes
- Electronic Switches (AREA)
- Non-Adjustable Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は厚膜感熱記録ヘッドに係り、特に各発熱素子の
表面温度を一定にするための抵抗値に好適な厚膜感熱記
録ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a thick film thermosensitive recording head, and more particularly to a thick film thermosensitive recording head suitable for a resistance value for making the surface temperature of each heating element constant.
従来の厚膜感熱記録ヘッドとしては、特開昭５１−８９
４３０号に示されるような構造のものが知られている。As a conventional thick film thermal recording head, Japanese Patent Application Laid-Open No. 51-89
A structure as shown in No. 430 is known.
この厚膜感熱記録ヘッドは、電極パターン形成、発熱抵
抗体印刷焼成、保護層印刷焼成などのプロセスを経て作
られるため、焼成後の抵抗値修正は特に実施されていな
い、しかし、厚膜感熱記録ヘッドにおいては、次のよう
な要因によって、発熱素子間に抵抗値のばらつきが生ず
る問題がある。This thick film thermosensitive recording head is made through processes such as electrode pattern formation, heating resistor printing and firing, and protective layer printing and firing, so no particular modification of the resistance value is carried out after firing. In heads, there is a problem in which resistance values vary between heating elements due to the following factors.
（１）発熱抵抗体の形状（面内パターン、電極間距離、
発熱抵抗体厚さ等）。(1) Shape of heating resistor (in-plane pattern, distance between electrodes,
heating resistor thickness, etc.).
（２）材料構成図因子（発熱抵抗体の粒径２分散状態、
充填材料質等）。(2) Material configuration diagram factor (particle size 2 dispersion state of heating resistor,
filling material quality, etc.)
（３）熱履歴条件（焼成温度履歴、焼鈍温度等）。(3) Thermal history conditions (firing temperature history, annealing temperature, etc.).
このような要因によって、厚膜感熱記録ヘッドの場合に
は、平均値に対して±２５％程度のばらつきを生ずるこ
とがある。Due to such factors, in the case of a thick film thermosensitive recording head, a variation of about ±25% from the average value may occur.
ところが、前述の抵抗値のばらつき修正する方法として
、レーザによるパターン・カッティング方法が考えられ
る。これを従来の厚膜感熱記録ヘッドに実施する場合に
ついて、第５図参照して説明する０図において、１は共
通電極、２は駆動系電極、３は発熱抵抗体、４は抵抗値
修正のためにレーザ・カッティングにより発熱抵抗体３
にあけた数μｍの孔を示している。However, as a method for correcting the above-described variation in resistance value, a pattern cutting method using a laser can be considered. The case where this is applied to a conventional thick film thermal recording head will be explained with reference to FIG. The heating resistor 3 is made by laser cutting.
It shows a hole several micrometers in diameter.
レーザ修正する場合、カッティングによる抵抗変化を同
時測定し、かつ常にフィードバックをかけながら工程を
進める必要がある。しかし、図示の如き構造の場合には
、２つの発熱部が合わさって１画素を形成するが、測定
は個々の発熱部について行う必要があり、この電極パタ
ーンではレーザ・カッティングによる抵抗値ばらつきの
修正を行うことは不可能である。When performing laser correction, it is necessary to simultaneously measure resistance changes due to cutting and to proceed with the process while constantly providing feedback. However, in the case of the structure shown in the figure, two heat-generating parts are combined to form one pixel, but measurements must be performed for each heat-generating part, and this electrode pattern uses laser cutting to correct resistance variations. It is impossible to do this.
一方、特開昭５７−６１５８６号に示されるように、発
熱抵抗体の中心部に切欠きを設けた厚膜感熱記録ヘッド
および特開昭５７−９６８７３号に示されるように、発
熱抵抗体と電極との接触部に導電性物質の存在しない領
域を設けた感熱記録ヘッドが知られているが、これらに
ついても抵抗値ばらつき低減という点については何ら配
慮されていない。On the other hand, as shown in JP-A No. 57-61586, a thick film thermal recording head with a notch in the center of the heating resistor, and as shown in JP-A-57-96873, a heating resistor and A thermal recording head is known in which a region in which a conductive substance does not exist is provided in a contact portion with an electrode, but these also do not give any consideration to reducing variations in resistance value.
本発明の目的は、レーザ・カッティングによる抵抗値ば
らつきの修正を行えて、高画質の記録系を達成すること
ができる厚膜感熱記録ヘッドを提供することにある。An object of the present invention is to provide a thick-film thermal recording head that can correct resistance value variations by laser cutting and achieve a high-quality recording system.
本発明は、基板上に駆動系電極と共通電極とを交互に配
設し、この電極パターンのもとに発熱抵抗体を印刷焼成
して成る厚膜感熱記録ヘッドにおいて、前記共通電極を
駆動系電極の本数に対応して分割し、その分割共通電極
に抵抗値測定パッドを設け、レーザ・カッティングによ
る発熱抵抗体の抵抗値修正を行った後、分割共通電極を
短絡することにより、抵抗値ばらつきの低減を図るよう
にしたものである。The present invention provides a thick film thermal recording head in which driving system electrodes and common electrodes are alternately arranged on a substrate, and a heating resistor is printed and fired based on this electrode pattern. Divide the electrodes according to the number of electrodes, install a resistance measurement pad on the divided common electrodes, correct the resistance value of the heating resistor by laser cutting, and then short-circuit the divided common electrodes to reduce the resistance variation. This is intended to reduce the
以下、本発明の一実施例を第１図、第２図に従って説明
する。第１図は本発明による厚膜感熱記録ヘッドの電極
パターン形状を示す平面図、第２図は共通電極の短絡部
分を示す断面図である。第１図において、この厚膜感熱
記録ヘッドでは、基板上にパターン形成される駆動系電
極１１と共通電極１２とが交互に配設されると共に、共
通電極１２が駆動系電極１１の本数に対応して分割され
、各分割共通電極１２ａの抵抗値測定のためのプローブ
用パッド１３が設けられている。そして、この電極パタ
ーン形状のもとに発熱抵抗体１４を印刷焼成し、レーザ
・カッティングによる抵抗値修正の後１分割共通電極１
２ａを短絡する構成となっている。尚、図中１５はレー
ザ・カッティングにより発熱抵抗体１４にあけられた数
μｍの孔を示している。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a plan view showing the electrode pattern shape of a thick film thermosensitive recording head according to the present invention, and FIG. 2 is a sectional view showing a short-circuited portion of the common electrode. In FIG. 1, in this thick film thermal recording head, drive system electrodes 11 and common electrodes 12, which are patterned on a substrate, are arranged alternately, and the common electrodes 12 correspond to the number of drive system electrodes 11. A probe pad 13 is provided for measuring the resistance value of each divided common electrode 12a. Then, based on this electrode pattern shape, a heating resistor 14 is printed and fired, and after the resistance value is corrected by laser cutting, the common electrode 1 is divided into 1 parts.
2a is short-circuited. In the figure, reference numeral 15 indicates a hole of several micrometers made in the heating resistor 14 by laser cutting.
第２図において１分割共通電極１２ａの短絡は、プロー
ブ用パッド１４間を金または半田の導体１６で印刷短絡
して焼成することで行われる。尚、１７はグレーズ蓄熱
層を示す。In FIG. 2, the one-segment common electrode 12a is short-circuited by printing a gold or solder conductor 16 between the probe pads 14 and firing the short-circuit. Note that 17 indicates a glaze heat storage layer.
従って、本実施例においては、共通電極を分割し、かつ
各分割共通電極に測定用パッドを設けたから、２箇所の
発熱部を均等に抵抗７Ｊ１４ｖ！することができて、全
体発熱量を均等にでき、その結果、出力画素をより良く
することが可能となる。また、レーザ・カッティング時
の抵抗値測定をオン・ラインで行うことができる。Therefore, in this embodiment, the common electrode is divided and each divided common electrode is provided with a measurement pad, so that the two heat generating parts are evenly distributed with a resistance of 7J14V! This makes it possible to equalize the overall heat generation amount, and as a result, it becomes possible to improve the output pixel. Additionally, resistance value measurement during laser cutting can be performed online.
第３図および第４図は分割共通電極の短絡の他の例を示
したもので、第３図の例は、プローブ用パッド１４間を
金などの導体１８でならし、その後銀パラジウムや半田
などの導体１９で短絡するようにしたものである。また
第４図の例は、共通電極の直流抵抗分域も兼ねて、プロ
ーブ用パッド１４間を導体２０で短絡後、１〜２ｍｍ厚
さの半田２１を盛るようにしたものである。この短絡に
おいては、ノイズ対策にも寄与する。3 and 4 show other examples of short-circuiting of divided common electrodes. In the example of FIG. 3, the space between the probe pads 14 is smoothed with a conductor 18 such as gold, and then silver-palladium or solder is used. The short-circuit is made by a conductor 19 such as. In the example shown in FIG. 4, solder 21 with a thickness of 1 to 2 mm is applied after short-circuiting the probe pads 14 with a conductor 20, which also serves as the DC resistance domain of the common electrode. This short circuit also contributes to noise countermeasures.
以上説明したように、本発明によれば、レーザ・カッテ
ィングによる抵抗値ばらつきの修正を行え、高画質の記
録系を得ることができる。As described above, according to the present invention, resistance value variations can be corrected by laser cutting, and a recording system with high image quality can be obtained.
第１図、第２図は本発明の一実施例を示し、第１図は本
発明による厚膜感熱記録ヘッドの電極パターン形状を示
す平面図、第２図は共通電極の短絡部分を示す断面図、
第３図および第４図は共通電極の短絡部分の他の例を示
す断面図、第５図は従来の厚膜感熱記録ヘッドの電極パ
ターン形状を示す平面図である。
１１・・・駆動系電極、１２・・・共通電極、１２ａ・
・・分割共通電極、１３・・・プローブ用パッド、１４
・・・発熱抵抗体、１５・・・レーザ・カッティングで
あけられた孔。
叉−
第 ｌ 国
第 ２ 目
第 ５ 国1 and 2 show an embodiment of the present invention, FIG. 1 is a plan view showing the electrode pattern shape of the thick film thermosensitive recording head according to the invention, and FIG. 2 is a cross section showing the short-circuited portion of the common electrode. figure,
3 and 4 are cross-sectional views showing other examples of short-circuited portions of the common electrode, and FIG. 5 is a plan view showing the electrode pattern shape of a conventional thick film thermosensitive recording head. 11... Drive system electrode, 12... Common electrode, 12a.
...Divided common electrode, 13...Probe pad, 14
...heating resistor, 15...hole drilled by laser cutting. - 1st country 2nd country 5th country
Claims (1)
電極パターンのもとに発熱抵抗体を印刷焼成して成る厚
膜感熱記録ヘッドにおいて、前記共通電極を駆動系電極
の本数に対応して分割し、その各分割共通電極に抵抗値
測定用パッドを設け、レーザ、カッティングによる発熱
抵抗体の抵抗値修正を行つた後、分割共通電極を短絡し
たことを特徴とする厚膜感熱記録ヘッド。In a thick film thermal recording head in which driving system electrodes and common electrodes are alternately arranged on a substrate, and heating resistors are printed and fired based on this electrode pattern, the number of the common electrodes is equal to the number of driving system electrodes. A thick film thermosensitive film characterized in that the divided common electrodes are divided correspondingly, a resistance value measuring pad is provided on each divided common electrode, and the resistance value of the heating resistor is corrected by laser and cutting, and then the divided common electrodes are short-circuited. recording head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60030318A JPS61189959A (en) | 1985-02-20 | 1985-02-20 | Thick film thermal recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60030318A JPS61189959A (en) | 1985-02-20 | 1985-02-20 | Thick film thermal recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61189959A true JPS61189959A (en) | 1986-08-23 |
Family
ID=12300444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60030318A Pending JPS61189959A (en) | 1985-02-20 | 1985-02-20 | Thick film thermal recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61189959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6431656A (en) * | 1987-07-29 | 1989-02-01 | Matsushita Electric Ind Co Ltd | Manufacture of thermal head |
| JP2008019609A (en) * | 2006-07-12 | 2008-01-31 | Ｙｋｋ Ａｐ株式会社 | Window unit |
-
1985
- 1985-02-20 JP JP60030318A patent/JPS61189959A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6431656A (en) * | 1987-07-29 | 1989-02-01 | Matsushita Electric Ind Co Ltd | Manufacture of thermal head |
| JP2008019609A (en) * | 2006-07-12 | 2008-01-31 | Ｙｋｋ Ａｐ株式会社 | Window unit |
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